Atomic Particles
Is a proton positive, negative, or neutral in charge?
Positive
What is the Symbol for Silver?
Ag
Is an electron positive, negative, or neutral?
Negative
What is an isotope?
Atoms of the same element that have different numbers of neutrons.
Which is horizontal, a row or a column?
Row
Are neutrons positive, negative, or neutral in charge?
Neutral
How many electrons does copper have?
29
THe energies that an electron can have are called ____________.
Energy Levels
What is the mass number?
The sum of the number of protons and the number of neutrons in a nucleus of an atom.
Each column in the periodic table is referred to as what?
A group or family
Name the three atomic particles in an atom.
Proton, electron, neutron
What is the atomic mass of Mercury?
Roughly 200.59
The arrangement of electrons in the orbitals of an atom is called the __________ _____________.
Electron Configuration
What is the nucleus of the atom?
The center of the element that houses both the neutrons and the protons.
Which scientist created the Periodic Table?
Dmitri Mendeleev
What is the area around the cell that holds all of the electrons?
Electron Cloud
How many neutrons does a typical atom of Lithium have?
4
What happens when an electron is excited?
It moves up an energy level.
What is the average atomic mass?
The weighted average of all naturally occurring isotopes of an element, measured in atomic mass units (amu's), according to their natural abundances.
Which portion of the periodic table contains the staircase?
Which atomic particles are found in the nucleus?
Protons and Neutrons
What do Neon, Argon, and Helium all have in common?
They all have the same number of electrons (8) and they have similar properties. They are all Noble Gases.
In the atom, the second energy level can hold how many electrons?
8
What does the Atomic Theory do?
Helps determine the locations and motions of electrons in atoms.
What is the main difference between the original and the modern periodic table?
The elements are arranged by increasing atomic number, not by atomic mass.